Fix right-facing wheelchair emojis

[12Me21]

I used a script to generate them from the left-facing originals.

Some of the elements weren't flipped properly before, e.g:

---

Note: I updated the png renders with:

rsvg-convert -w 72 -h 72 ./assets/svg/"$1".svg -o temp.png
pngquant --speed 1 -f --quality 50 --output ./assets/72x72/"$1".png -- temp.png

which seems to produce similar size/quality to the existing files?

[Nerixyz]

Thank you. Should mention that #77 introduced this. Seems like an imagemagick bug.

Some of the elements weren't flipped properly before

Some of the images weren't generated properly before

[12Me21]

Thank you. Should mention that #77 introduced this. Seems like an imagemagick bug.

oh I should clarify, this is an issue with the svg files themselves. (the png renders were accurate to the svgs)
the problem seems to be that they added a transform attribute to all elements, including <g>, which means the flip got applied twice to any nested elements (like, <g transform="…"><circle transform="…"/>…</g> etc.)